Search

We performed a comparative analysis of quantitative parameters for Pleistocene sediments from the pelagic zone and submarine parts of continental margins of the Atlantic Ocean in seven key areas. In the Neopleistocene compared to the Eopleistocene, the lithogenic fluxes increased both in the pelagic zone and on the continental margins. The residual absolute masses of СаСО3 and biogenic opal decreased in both megafacies zones. The biogenic sedimentation was more important for facies structure of the pelagic zone than for continental margins. [ABSTRACT FROM AUTHOR]

We have done a comparative analysis of quantitative parameters for Pleistocene sediments from pelagic zone of the Indian Ocean and submarine parts of its continental margins (for five key areas). The distribution areas, thicknesses, and volumes of main lithological types and groups have been analyzed. Dry sediment masses and their accumulation rates have been calculated. In the Neopleistocene compared to Eopleistocene, the fluxes (absolute masses) of all components of bottom sediments have been increased both in the pelagic zone and on the continental margins. Biogenic sedimentation was more important for facies structure of pelagic zone than (on average) for continental margins. [ABSTRACT FROM AUTHOR]

A comparative analysis of two large Arctic sedimentary basins was performed: the Sverdrup and East Barents, with emphasis on the quantitative parameters of sedimentation in the Mesozoic, determined by A.B. Ronov's volumetric method. The similarities and differences of both basins are revealed, in particular, in sediment accumulation areas, in masses of sedimentary material per time unit, and in gross sand ratio. It was concluded that at the end of the Paleozoic and in the Mesozoic, both basins were close to each other but did not merge into one structure. In the Cenozoic, the distance between the basins increased due to spreading of the Eurasian Basin. [ABSTRACT FROM AUTHOR]